Saw-swage



No.v 608,494. Patente Aug. 2, |898. T. WALKER. v

SAW SWAGE.

Har. 18, 1896. Re ed Jan. B, 1898\ eeeeeeeeeeeeee oooooooo No. 608,494. Patented Aug. 2, |898.

T. WALKER.

' SAW SWGE. (Application filed Mal-.18, 1898. Renewed Jan. 8, 1898.)

(No Mndel.) 3 Sheets-Sheet 2.

` im I yf l M4 a 0' wl@ www lllbA L l TH: onms Pains co PnoTo-LImuTNswmuToN n c v Arofmfys No.. 808,494. Paented Aug. 2, |898.

- T. WALKER.

SAW SWAGE.

(Application led Mar. 18, 1896. Renewed Jan. 8, 1898.) (Nomaden.) 3y sheets-sheet 3.

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THOMAS WALKER, OF SIDNAW, MICHIGAN.

SPECIFICATION forming part of Letters ,Patent No. 608,494, dated August 2, 1898. Application filed March 1896'. v)Renewed January 8, 1898. Serial No. 666,100. (No model.)

To a/ ZZ whom it may concern: i

siding at Sidnaw, in the county ofIjIoughton and State of Michigan, have invented a new and Improved Saw-Swage,of whichthefcllowing is a speciiication. e

My invention relates to certain vimprovements in saw-swaging devices, yand, lit Vprif Inarily seeks to provide a device of this char-y acter of a simple and economical constructien which can be easily manipulated and which will effectively serve for its intended purposes.

My invention also seeks to provide a sawswaging means having peculiarly constructed and arranged die devices which can be so adjusted without changing the angle thereof to the hook of the teeth as to swage the back as well as the face uniformly and positively.

Vith other objects in view, which hereinafter will be referred to, my invention consists in the peculiar combination and novel arrangement of parts, such as will be first described in detail and then be specically pointed out in thevappended claim, reference being had to the accompanying drawings, in which- Figure 1 is a perspective view of my improved saw-swaging devices as applied for use. Fig. 2 is a similar view showing the opposite side of the swager from that shown in Fig. 1. Fig. 3 is a longitudinal section of the same, partly in side elevation. Fig. 4 is a top plan view thereof.- Fig. 5 is an end elevation. Fig. 6 is a transverse section taken on the line 6 6 of Fig. 3. Fig. 7 is a detail view of `the eccentric shaft hereinafter referred to.

the saw-blade is adapted to be clamped in the manner best illustrated in. FigflOyby refer: ence to which itwill be seen the depending portion Af of'the body has a threaded open- .doublewear- `A"ing fr; in which is fitted the adjustable Clampscrew B, and whichy is adapted to be held to any of itswadjusted positions by the bearingscrew b, which passes.,l upward through a threaded opening in the said member A', as shown. In the portion A2, preferably opposite the lopening a", is a similar threaded opening c2, in which is fitted a bearing-screw C, the outer end of which has a handle membelrlCl, whereby the said screw C can be conveniently moved in or out, as required.

By providing clamping means as above described itis manifest the screw B ycan be iirst adjusted to bear against one face of the saw and held fixed toits position, after which the screw 'C can be moved against the opposite face of the blade, and thereby securely clamp it in position during the swaging operation.

In the bifurcated portion of the swage-body is formed suitable openings a3 co3, in which is held the double bushing member l), the detailed construction of which is best illustrated in Fig.` 8, and which comprises the circular end bearing members d d, the central cut-away portion d', and the joining portion d2, the end Nmemberscld being provided with apertures d? to receive the ends of the binding or set poltQn. AT A2, es Shown f In the practical construction the cut-away portion, the apertures d3, and set-screws E are so arranged relatively that the cut-away portion d will be so .disposed aste admitof the free engagement of the saw-teethnwith the anvil, as most clearly shownin Fig.Y l

The object in providing the double or connected bushing members is to admit of the said bushing. member being withdrawn, reversed, andreinserted when one side becomes worn, so as to bring the unworn or opposite face in place to receive the pressure or wear of the eccentric shaft, the half-ring or connecting-piece in center. being also so disposed as to keep the eccentric die from wearing on the working part when moving from tooth to tooth when in use.

I ,By providing bushing ,members joined as described the same bushings can be used for Furthermore, by making the fscrews EE, which pass up into the pendent bushings removable new bushings l can be em- IOC ployed, which bushings can be of different diameters to admit of eccentrics being employed having a larger diameter than their bearings.

F indicates the eccentric shaft, which is journaled in the bushing D and has a central eccentric part F formed between the enlargements F2 F2 in such a manner as to provide a guide f for the upper edge of the sawtooth. The shaft F also has annular grooves f f' to receive the lock-plate G, secured on the outer face of the swage-body, (see Fig. 2,) which plate has a slot g, through which passes a set-screw g', that serves to retain the said plate G in position to insure the holding of the eccentric shaft within its bearings and against danger of longitudinal movement.

The swage-body A has a suitable slotway .I in the top, in which is held a vertically and laterally adjustable anvil II, the lower end of which is preferably provided with highlytempered bearing-faces 7L 7L', one of which, 71., is made straight, while the other, h, is made at an angle or curve to fit the hook of the tooth.

It will be observed by reference to Fig. 3 the anvil or die II is made smal ier than the slot or mortise in which it is iitted, and suoli die is made laterally adjustable by means of the setscrews I I I', so that it can be set so its face 7L can be made to tit the back of any length of tooth and with its face 7L' to engage the back orhook end of the tooth, such adjustment also admitting the setting of the hook-face 71, over the center of the eccentric, and thereby admitting of swaging the back of the tooth, as well as the throat or front.

rlhe anvil II is held down by means of a large set-screw K, which engages threaded portions 7U' 7:, in the side walls of the slotway J.

By making the anvil laterally adjustable it is manifest that the same anvil can be set to operate on different sizes of teeth, it being manifest, however, that for different shapes of saw-teeth different-angled anvil or die members may be used.

Dy giving the desired angle to the working face ofthe anvil the swage can be maintained at a vertical position Afor any form of tooth and the necessity of tipping the swage in order to modify the shape to be given to the tooth entirely avoided. Furthermore, the anvil can have the tips or wearing-faces ground to a templet, thereby insuring exaetness of shape and enabling all the teeth to be swaged the same.

In order to determine with exaciness the position of the eccentric D at the beginning of the swaging operation, I provide an adjustable stop l), the extension Z of; which serves to limit the backward movement of the handle D3, whereby the eccentric is operated. This stop L is preferably made adjustable by being pivotally mounted at L on a stud-bolt and provided with a slot L2, in which works an adj Listing-screw Z2 and jam -screw Z3. Thus it will be seen as the handle D3 is swung backward it will Contact with the extension 7 of the stop, and consequently determine with exaetness the position of the eccentric D and the space of clearance between this eccentric and the anvil.

To the body of the swage is adjustably eonnected a guide or saddle M, the purpose of which is to prevent the swage from tipping and insures that the eccentric and the anvil shall always maintain the same position when operating to swage the saw-teeth alike. ly adjusting the saddle or guide M either upward or downward the position:0f the body A of the swage, and consequently the position of the eccentric D and anvil II with respect to the saw-teeth, can be varied as desired to suit saws of different kinds. Preferably a hardened steel plate m. is secured to the saddle M between its depending arms m', such plate being replaceable and serving to avoid wear upon the saddle M.

The preferred manner of adjustably supporting the guide or saddle M is that shown in the drawings and most clearly in Figs. l and 2, by reference to which it will be seen the saddle M has a shank m2, which is vertically adjustable in a stud member N, longitudinally adjustable in the slot o in the bracket-arm O, det-aehably connected to the swage-body at one side, as clearly shown.

From the foregoing description, taken in connection with the accompanyingdrawings, it is thought the complete operation of my improved saw-swage will be readily understood by those skilled in the art to which it appertains. The saw to be swaged will be placed in the channel (t and held between the set-serews l and C, the operator by means of the handle C' turning the screw C suflieient to firmly hold the blade in position with one of the teeth between the eccentric and the anvil or die. At such time the guide or saddle M rests on the tops of the saw-teeth, as shown. rlhe operator then moves thehandle D3, so as to cause the eccentric to bear upon that part of the saw-tooth between the eccentric and the adjacent working faces of the anvil, it being understood that the handle Dz at this time will be turned in the direction from the throat toward the point of the tooth, thus drawing and spreading the tooth-point in order to give thereto the desired shape. ly this means an impression is made on the tip, as well as the toothed side of the toothpoint, which in practice is found tobe of material advantage, as it gives better clearance to the back of the saw-tooth points.

Vhile I prefer to arrange the several parts of my invention as illustrated in the accompanying drawings, it is manifest that the precise details of construction above described and shown in the drawings may be varied or modified by the skilled mechanic without departing from the broad idea of my invention.

llaving thus described my invention, what I claim, and desire to secure by Letters Patent, is-

In a saw-swage, the combination of a slot- IOO IIO

ted body, With an Y anvil therein, a doubleof said shaft, so as to look it and the bushing ended reversible 4shaft vhaving aneeoentric against endwise displacement, all substanzo portion, and an annumilgrgoe near each elnld tially as set forth. flush with the side o t e o y, a reversi e 5 bushing adapted to surround the shaft and THOMAS WALKER' flush at each end with the side of the body, Witnesses: mocking-plate secured to the body and adapt- ESTHER HOUSER, ed to engage-in either of the annular grooves y GEORGE I-I. HOUSER. 

